Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Diamond Dust Carbon pushrods???

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Old 02-06-2007, 03:34 AM
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Xardas26
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Default Diamond Dust Carbon pushrods???

What kind of carbon tubes do u guys use instead of the heavy 4-40 pushrods?? What type of couplers do you use and how do you glue it in the carbon tube?? Questions over questions, i know, but my maiden flight is coming up soon, and I wanna make sure my D-Dust survives it. The Rossi 46 with a Macs Tuned Pipe is a screamer, it's gonna take a toll on her.
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Old 02-06-2007, 10:23 PM
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Default RE: Diamond Dust Carbon pushrods???

Check out [link=http://www.darrolcady.com/]Darrol Cady's[/link] store... he carries a lot of the fast stuff. Click the C/F pushrods link. Nice guy to deal with.
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Old 02-07-2007, 10:09 PM
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Default RE: Diamond Dust Carbon pushrods???

The factory DD 4-40 push rods are fine and weight at the rear is what you need. The DD should balance on the high spot formed by the two main spars when you set the plane on a flat surface. You do need to stiffen the rods if the DD will see high speed/ high torque servos. I epoxied short lengths of .156 OD X .093 ID carbon tubes around the push rods leaving 1"on each end bare.
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Old 02-07-2007, 10:44 PM
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Default RE: Diamond Dust Carbon pushrods???

I used CF tube and titanium ends, for my whiplash, from Art's hobby, but he closed shop. I glued the ends in with Loctit Hysol 4692. you can look for these at:

http://www.dreamworksrc.com/catalog/
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Old 02-07-2007, 11:10 PM
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Default RE: Diamond Dust Carbon pushrods???

As for the ends of the push rods, one end has the factory rolled 4-40 thread and the other end needs something after you glued the carbon tube on.
Hobbie shops carry "solder on clevis" and work fine if you do it right. First sand the end of the rod and make it bright, then clean it with alcohol or acetone. Now "tin" a thin coat of solder in the area were the clevis will go, this helps to wick in more solder later when you solder the end on. The push rod should be in to the clevis so far as that you can get some solder on each side of the clevises solder body as long as it won't interfere with the servo arm throws. Don't use a die and thread the end because the major thread diameter will be too small and may pull out any clevises you use (unless you thread and solder).
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Old 02-08-2007, 02:36 AM
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Default RE: Diamond Dust Carbon pushrods???

Thank you guys!!! I just ordered a C/F pushrod set from centralhobbies:

http://www.centralhobbies.com/contro...e/pushrod.html
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Old 02-08-2007, 07:06 PM
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Default RE: Diamond Dust Carbon pushrods???

Yup, that will work. $$$$
Make shure you get the CG right and plenty of up eleveron (high rate). If you have a dead stick with a full fuel tank you'll need every bit of it.
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